Credit: Instagram

She did it! After tweeting that she was going crazy waiting for her baby to arrive, Teen Mom 2 star Kailyn Lowry finally welcomed her son, Lincoln Marshall Marroquin, on Saturday, November 16.

Kailyn told Us Weekly she’s exhausted, as you might expect, but she and husband Javi Marroquin are “so excited and surprised by our new baby boy.”

Credit: Facebook

They didn’t know what they were going to get in the boy/girl department. The result is good news for Kailyn, who just tweeted on November 13, “Everything I know about babies is BOY. I have everything I would need. Even the PERFECT boy name picked out. I wouldn't mind another boy!"

Lincoln arrived at 4:28 p.m. on Saturday, weighing 8 pounds, 6 ounces. And now Isaac, 3, has a little brother to play with (and hopefully not torment). The two look pretty chummy already in a the first exclusive photo of Lincoln and big brother Isaac courtesy of InTouch

Lincoln is a pretty cool name, and maybe this Lincoln can grow up and marry the lady Lincoln that Kristen Bell and Dax Shepard produced earlier this year.

Congrats to Kailyn, Javi, and Isaac!

Sources: Us WeeklyInTouch